View Full Version : Bad science...Bad astronomy.

2011-Jun-08, 08:06 PM
Please address the issue not the messenger. Looking across the news pages I see a note about a incoming asteroid. November the 8th 2011. Its reported as if its a issue of some concern. Yet it is not projected as a impactor. Near to a lunar distance away is close and interesting that it is so large. When did this object first be observed and its path confirmed ?
Could some facts of science be etched from the hysteria ? Nothing else.

2011-Jun-08, 08:16 PM
How about we start with the comet's name.
I suspect I know which one the hype is about (we have a few threads in CT about it)
But after "Looking across the news pages", I'm sure the name was in there. That's a good start for a search here.
Comet elenin collision probability (http://www.bautforum.com/showthread.php/115000-comet-elenin-collision-probability)

What's the bad science or bad astronomy? The science and astronomy about it are fine. It's the news that's bad.

2011-Jun-08, 08:30 PM
No... The MU55. I did not mention that because I have no confirmation of such... Elenin was not mentioned. I am asking.

2011-Jun-08, 08:55 PM
Try searching for "2005 YU55" instead of "MU55". This 400m wide asteroid will indeed be passing by on November 8, 2011. It isn't a collision threat for at least the next century, but this close pass is highly anticipated due to our chance to point lots of sensors at it. In particular, radar sensors will greatly benefit from the close approach.

2011-Jun-09, 01:21 AM
When did this object first be observed and its path confirmed ?

NASA had an article (http://neo.jpl.nasa.gov/news/news171.html) on it back on March 10th, and the article says it was discovered in 2005. It also says it's a very dark, nearly spherical object 400 meters in diameter. Interesting article. Yeah, that's pretty close - .8 lunar distance. As the article says, an event of this type will not happen again until 2028 (.6 lunar). And as Isaac mentions, 2005 YU55 poses no threat of an Earth collision over at least the next 100 years. I'd like to know how fast this thing is going to be moving as it zips by....

The real news is, observers are gearing up for this opportunity. For one:

Using the Goldstone radar operating in a relatively new "chirp" mode, the November 2011 radar opportunity could result in a shape model reconstruction with a resolution of as fine as 4 meters.

2011-Jun-09, 02:11 AM
You can also read about 2005 YU55 on Wikipedia at:

The Wikipedia article has 7 references that you can look at in more detail.

-- Kevin Heider

2011-Jun-09, 05:35 AM
Thank you both / all ... Just what I wanted. I knew that the MU55 was wrong...

so was not looking. Now I can and have YUSS (55)! :razz: